Carbureter.



W. M. GENTLE.

GARBUEBTER. APPLICATION FILED MAB.. 9, 1910.

Patented Aug. 15,` 1911.

T n R. C m u n ma,... V. I

W Ham BY TORNEY.

WfNEssEs.-

WLLAM M. GENTLE, OF GREENWOOD, Il'DIANA.

CARBURETER.

'Specification of Letters Patent. Patented Allg'. 15, 1911 .application filed March 9, 1910. Serial No. 548,188.

'To all 'whom it may concern:

Be it known that l, lVILLrM M .Gmrrnn',

of Greenwood, county of Johnson, and State of Indiana, have invented a certain new and useful Carburetor; and l do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings.

The object of this invention is to improve the construction and operation of carbureters.

A feature of the invention is the elimination of the idoat common in such devices. This renders it ossible to omit the large fuel chamber an the fuel cannot slop out and the device does not need to be maintained in any particular position as is true of carbureter containing float chambers.

Another feature consists in utilizing the intake of air under the action of the enginev for controlling the supply of fuel to the carbureter as well as its access to the nozzle and the discharge of fuel from the nozzle. This dispenses with the ordinary needle valve or any other like valve for controlling the fuel supply. It is accomplished by mounting the air valve on a movable nozzle with a hollow nozzle stem having a port adapted to register with the fuel supply passageway for additional supplies of fuel at times particularly during high speed of the engine. At

` other times the supply of fuel to the nozzle stem is cut off but said nozzlestem always carries a limited quantity of fuel.

notherfeature consists in the combina tion of a movable nozzle or fuel supply and a mixing chamber into which the nozzle is adapted to move during high speed ofthe engine, and, as the nozzle moves farther into the mixing chamber it is subjected more and more tothe action of the air current through.

the mixing chamber wherein an increased quantity of fuel is drawn through the nozzle.

The foregoing and other features of this invention will be understood from the ac companying drawings and the following description and claims.

ln the drawings Figure l is a central vertical section through the device with the i valves in their idle' position. Fig. 2 is the same as Fig. 1, withthe valves actuated. Fig. 3 is a cross section on the line 3-3 of Fig. 1.- Fig. 4 1s a section on the line 4-4 of Fig@ and Fig. 5 is a section on the line 5-5 of Fi 3.

En dota' 1 provide en air chamber 16,

which consists of the two semi-spherical parts 11 and 12 and a mixing chamber 13.y

The carbureter has a bottom air inlet 14 which is normally closed by the valve 15.

' This valve is secured to the valve stem 16 which'extends upwardly through the frame 17 whichis integral with the wall of the part 12 of the air chamber. The frame 17 has upper and lower rounded extensions 18 which are threaded and ground to receive the packing nuts 19. The stem 16 and the passageway through the frame 17 have nished faces and are made to fit the stem,

tight. The upper part of the stem 16 is tu- This passageway extends around the stem' 16 so as to permita free inflow of fuel when the ports are in communication. The fuel outlet 21 in the nozzle 20 may vary in size to suit the density of the fuel. The passageway 24 is connected to a fuel tank by some suitable piping means and it is understood that the tank will be somewhat higher than the carbureter so that a slight pressure I will cause the fuel to pass freely through the pipe. As seen in Fig. 4 the pipe 25. is provided with a valve 26 which is adapted to cut off the supply of fuel to the carbureter when not in use. As seen in Fig. 1, the valve 15 and the .port 9 '-.re held normally closed by the action of Lne spring 27 and,

as seen in Fig'. 2, they are opened by the suction of the engine with which the carbureter is associated. The upper port 13 of the carbureter is turned' at a right an leand near the center there is located a va ve428 which is' secured at the lower edge to the rod 29 which has bearings in the side wall 7 of the tube 13. As seen in Fig. 3, the valve 28 is held normally closed by a spiral spring 30, one end'of which is secure in the rod 29 :7o bular and the end threaded at the upper end seil and the other to the side wallof the tube 134 On the other end of the Arod A29 there is secured an arm 31 which is adapted to enga e the stop lever 32. The lever 32 is loosely mounted on the rod 29 and is operated by means, not here shown. As' seen in the i 44 but is closed by the suction of the engine.

-which -feature will be of considerable advans inrushing air to concentrate around the lmedium density'the construction shown in drawings the valve 28 is throttled by .the operation of the lever 32, that is, the valve 28 is free to move by the suction of the engine till the arm 31 engages the lever Then the opening of the valve will be stopped. On the underside of the outer end of the part 13 there is a valve 33 pivoted at 34 which is adapted to close the port 35. This valve is held normally closed by a flat spring 36 which is secured to the boss 37 on the end of the tube 13.

The object of the valve 33 is to )ermit the back fire or premature explosion for the engine lto have free access to the outer air and not to pass through the carburetor. As seen in the drawings a back fire would assist in closing the valve 28 and cause it to open freelythe valve 33, whereby the carbureter would not be damaged. In the upper end of the port 12 there is an inwardly curved baflie plate 37 whif 1 assists in causing the spray nozzle 20, as seen in Fig. 2; 'This plate is cut away at 38 so as to fit around the boss 17, lt is held in place by the screws 39 passing through the vertical slots 40 and by the means first described is vertically adjustable. As' seen in the drawings there is a channel flange 41 cast integral with the frame 17 which is adapted to catch the excess or overflow of fuel. In Fig. 2 a means is provided for conveying the excess fuel from the channel 41 to some suitable 'receptacle not here shown. A pipe 42 leads from the channel 41 to a valve 43. This valve is normally. held vopen by the spring A pipe 45 connects the valve with some suitable receptacle. The construction shown in Fig. 2 is for use where the nature of the fuel would be light and the overflow greater than where the fuel is heavy. With fuel of Fig. l is desirable. The channel 41,-. is eliminated and the overflow of fuel is caught by the valve 15 which is pan-shaped. This overflow evaporates-in the pan 15 and is taken up by suction from the engine by the pan as seen in the drawingsl- The parts 11 and 12 are bell-shaped to form an air evaporating chamber for the overflow of fuel. as both ends of the carbureter are securely closed it will he seen that the chamber will always contain a charge of explosive gas tage upon starting the engine. lt will also be seen from the drawings that the valve l5 must be raised till the port 23 comes into communication with the passageway 24 before out side air is admittedto the carbureter. rThis is due to the deep seat of the valve opening 14. Therefore, before the outside air passes into the carburetor, the pressure from the fuel tank through pipe 25, passageway 24, port 23, and chamber forces the nozzle 20.

ln operation the suction from the engine first opens the valves 28 and acts upon the spray nozzle slightly before lifting the valve 15. As the valve 15 is lifted, the spray nozzle is also lifted so as to bring it nearest to the greatest condensation of the inrushing air.

What I claim as my invention and desi-re to secure by Letters Patent is:

l, A carbureter including a 'chamber with an air inlet, a valve for closing it, a mixing chamber through which the air passes, a fuel nozzle movable into said mixing chamber by the movement of the valve controlling the intake of air, and means tending to'close said valve and move said nozzle'in a direction away from said mixing chamber and operating to permit the opening of the valve and nozzle to an extent proportional to the strength of the air blast.

2. A carbureter including a chamber with an air inlet, a valve for closing it, a mixing chamber through which the air passes, a fuel nozzle movable into said mixing chamber by the movement of the valve controlling the intake of air, and a spring tending to close said valve and move said nozzle in a direction away from said mixing chamber.

3. A carbureter including an air chamber with an air inlet, a valve for closing the air inlet, a mixing chamber through which the air passes, a fuel nozzle movable into said mixing chamber and carrying said valve s0 as to be moved by the intake of air, and a spring surroundingsaid nozzle which tends to close said valve and move the nozzle in a direction away from said fuel chamber.

4. A earbureter including a casing having an air inlet and mixing chamber, a valve for closing saidair inlet, a nozzle which is movable under the influence of the air intake acting on said valve and having a fuel chamber with a lateral inlet port, and a fuel supply passageway leading to said nozzle and adapted to register with the port thereon onlywhen the nozzle is actuated.

5. A carbureter including a casing having an air inlet and mixing chamber, a valve for closing said air inlet, a nozzle which is movable under the influence of the air intake acting on said valve and having a fuel chamber with a lateral inlet port, a fuel supply passageway leading to said nozzle and adapted to register with the port therein only when the nozzle is actuated, and a spring for holding said nozzle with the port out of registry for closing said passageway.

6. A carbureter including a mixing chamber through which the air is adapted to pass, a fuel nozzle movable by the intake of air farther into said mixing chamber in proportion to the intake of air, whereby 'the quan- 4fuel up and out of the spray be in proportion to the air that passes through said chamber, and an adjustable plate for controlling the course of the air that passes the outlet of said nozzle.

7. A carbureter including a chamber provided With an air inlet, a valve for controlling said inlet and movable under the inliuence of. the intake of air, a stern for said valve having a fuel chamber therein With a port thereto, nozzle forming a part of said valve stem and .in communication with said chamber, and a fuel passageway adjacent the portion of'v the Valve stem containing the port and normally out of registry with said port so that When the valve is moved said port will be moved into registry with the fuel supply passageway.

8.- A carburete-r including a chamber provided With an air inlet, a Valve for Control- 'ling the influence of the intake of air, a

stem connected With said valve and having a fuel chamber. therein With a port thereto, a nozzle forming a part of the valve stem and in communication with said fuel chamber, a fuel supply passageway adapted to register with the port in said valve stem when thevalve is actuated, afuel overflow receptacle surrounding said valve stem,l and means for draining said overflow receptacle.

1n Witness whereof, I have hereunto affixed my signature in the presence of the witnesses herein named.

WILLIAM M. GENTLE. 'Witnesses G. H. BoiNK, H. TURNBELL. 

